C2 Brake Light Problem - NCRS Discussion Boards

C2 Brake Light Problem

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • Leo M.
    Frequent User
    • May 31, 1995
    • 35

    C2 Brake Light Problem

    The left rear brake light will not function on my 66. The right brake light does function properly, as do the turn signals on both sides and the parking/headlights. I have tried replacing the 1157 bulbs, tightened the grounds and even tried a separate ground wire from the left light directly to the frame. I have cleaned the connections at the firewall and the connection between the rear harness and the main wiring harness. Any ideas or suggestions would be appreciated.
  • Stephen L.
    Extremely Frequent Poster
    • May 31, 1984
    • 3149

    #2
    Re: C2 Brake Light Problem

    A suspect is the turn signal switch is faulty. I'd test the circuit with a voltmeter to see if there is voltage at the bulb socket pin when the brakes are applied and the turn signal is NOT activated. Part of the switch circuitry allows the brake light to flash when brakes AND turn signal are energized simultaneously......

    Comment

    • Richard M.
      Super Moderator
      • August 31, 1988
      • 11318

      #3
      Re: C2 Brake Light Problem

      Leo,

      I agree with Stephen that the Directional switch is likely the problem. What you may want to do is to have a observer watch the lamps while wiggling the switch lever. If it's intermittent then that proves it's the switch.

      For reference here are switch diagrams, original wire colors and repro switch colors.

      Ref post Here which also has a link about the (standard)column removal.

      Rich



      Comment

      • Leo M.
        Frequent User
        • May 31, 1995
        • 35

        #4
        Re: C2 Brake Light Problem

        Thanks for the suggestions regarding the turn signal switch. I removed the steering wheel assembly (interesting experience as the car as a tele column) and got to the turn signal switch. Did not really find anything broken or loose, but cleaned it up, made sure all the connections were snug and reassembled everything. Bingo, brake light now works.

        Comment

        • Stephen L.
          Extremely Frequent Poster
          • May 31, 1984
          • 3149

          #5
          Re: C2 Brake Light Problem

          Leo, now you are the 1966 turn signal/brake light guru.......

          Comment

          • Richard M.
            Super Moderator
            • August 31, 1988
            • 11318

            #6
            Re: C2 Brake Light Problem

            Leo,

            It may be that when you took everything apart you unknowingly wiggled something to fix a bad connection, likely on the switch internal contacts between the White wire input to the Yellow output wire to the Left Stop lamp circuit. I say this because the Yellow wire is also used in the Left Directional Lamp path, so I doubt it was a external connection fault.

            I hope it stays fixed for you. However, I've found that intermittent electrical connections often come back to haunt.

            Rich

            Comment

            • James W.
              Extremely Frequent Poster
              • December 1, 1990
              • 2647

              #7
              Re: C2 Brake Light Problem

              Leo,

              My diagnosis was that your wiring harness connection at the base of your steering column was not making good connection. If it isn't completely pressed together you will have the exact problem you were describing. I chased this same issue about a year ago on my '65 and this is what the problem was. Since you explained that you had the column out to look for the problem you fixed it when you reconnected the wiring connection and didn't even know it. Glad you were able to fix the problem.


              Regards,

              James West

              Originally posted by Leo Michaud (26171)
              The left rear brake light will not function on my 66. The right brake light does function properly, as do the turn signals on both sides and the parking/headlights. I have tried replacing the 1157 bulbs, tightened the grounds and even tried a separate ground wire from the left light directly to the frame. I have cleaned the connections at the firewall and the connection between the rear harness and the main wiring harness. Any ideas or suggestions would be appreciated.

              Comment

              Working...
              Searching...Please wait.
              An unexpected error was returned: 'Your submission could not be processed because you have logged in since the previous page was loaded.

              Please push the back button and reload the previous window.'
              An unexpected error was returned: 'Your submission could not be processed because the token has expired.

              Please push the back button and reload the previous window.'
              An internal error has occurred and the module cannot be displayed.
              There are no results that meet this criteria.
              Search Result for "|||"